Kinemetry of local (ultra)luminous infrared galaxies using VIMOS/VLT integral field spectroscopy

Details Kinemetry of local (ultra)luminous infrared galaxies using VIMOS/VLT integral field spectroscopy Kinemetry of local (ultra)luminous infrared galaxies using VIMOS/VLT integral field spectroscopy

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sacm.confe..37b&link_type=abstract

The Starburst-AGN Connection under the Multiwavelength Limelight, held 14-16 September 2011. Published online at http://www.scio

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The kinematics of a sample of 38 (Ultra)Luminous Infrared Galaxies [(U)LIRGs] at low redshift (=0.022) will be analyzed thanks to Integral Field Spectroscopy (IFS) carried out with the VIMOS instrument on the VLT. Studying the characteristics of (U)LIRGs at low redshift allow us a better understanding the interrelated physical processes involved, and the implications for high-z since these galaxy populations are more numerous at cosmological distances than locally. The H-alpha line profiles will be studied in order to extract the relevant emission line information (central wavelength, FWHM and flux intensity). We are going to apply the kinematic criteria used by Shapiro et al. (2008) to the whole sample in order to distinguish galaxies dominated by ordered rotational motions (i.e., "disk") and those involved in major merger events (i.e., "merger") considering the asymmetries in both the velocity field and velocity dispersion maps of the warm gas (as traced by H-alpha). To this aim the "kinemetry" method will be considered and the results of a sub-sample of 4 LIRGs (i.e., 2 "disks" and 2 "mergers") will be discussed. We are exploring alternative methods using Monte Carlo simulations to kinematically separate "disks/mergers" along with the estimation of other kinematic parameters (i.e., nuclear velocity dispersions, v/sigma ratios and dynamical masses (M_{dyn})).

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